JP2018120189A - Three-dimensional display device, three-dimensional display system, head-up display system and mobile body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce crosstalk while suppressing generation of moire and ensuring an opening ratio.SOLUTION: A three-dimensional display device 3 includes: a display screen 51 having a plurality of sub-pixels arranged in a matrix along a horizontal direction and a vertical direction; and an optical element for regulating a beam direction of image light emitting from the sub-pixel by each of a plurality of strip regions extending in a predetermined direction on the display screen 51. An end of the strip region crosses over the plurality of sub-pixels, and a segment length corresponding to one pixel along the horizontal direction is shorter than a segment length corresponding to one pixel along the vertical direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a three-dimensional display device, a three-dimensional display system, a head-up display system, and a moving body.

  Conventionally, in order to perform three-dimensional display without using glasses, part of the image light emitted from the image display panel reaches the right eye, and the other part of the image light emitted from the image display panel is left A three-dimensional display device including an optical element that reaches the eye is known. Usually, when the direction along the line connecting the left and right eyes is the horizontal direction, and the direction orthogonal to the direction is the vertical direction, the subpixels of the image display panel have rectangular shapes arranged in the horizontal and vertical directions. Conventionally, in order to control image light reaching the left and right eyes, a parallax barrier having a plurality of strip-shaped openings extending in the vertical direction is used as an optical element. However, when the parallax barriers extending in the vertical direction are arranged in the horizontal direction, there is a problem that it is difficult to view an image due to the occurrence of moire or the like. Therefore, Patent Document 1 proposes a three-dimensional display device including an optical element in which a plurality of strip-shaped parallax barriers extending in the diagonal direction of the sub-pixels on the display surface are arranged.

US Patent Application Publication No. 2015/0336240

  However, when the apertures of the parallax barrier are arranged in the diagonal direction of the sub-pixels, the left eye image light is mixed with the right eye and the right eye image light reaches the right eye according to the position of the observer's eye. Crosstalk that arrives in a mixture is likely to occur. If the opening of the parallax barrier is narrowed to avoid crosstalk, the image becomes dark.

  The present disclosure provides a three-dimensional display device, a three-dimensional display system, a head-up display system, and a moving body that can reduce the crosstalk while suppressing the occurrence of moire and ensuring the aperture ratio.

  The three-dimensional display device according to the present disclosure includes a display surface including a plurality of subpixels arranged in a grid along the horizontal direction and the vertical direction, and a plurality of strip-like regions extending in a predetermined direction on the display surface. An optical element that defines a light beam direction of image light emitted from the subpixel, and an end of the band-shaped region crosses the plurality of subpixels and is a length of a section of one pixel along the horizontal direction. Is shorter than the length of the section for one pixel along the vertical direction.

  The three-dimensional display system according to the present disclosure includes a display surface including a plurality of subpixels arranged in a lattice shape along a horizontal direction and a vertical direction, and a plurality of strip regions extending in a predetermined direction on the display surface. An optical element that defines a light beam direction of image light emitted from a subpixel, wherein an end of the band-shaped region crosses over the plurality of subpixels and is a length of a section of one pixel along a horizontal direction. Is shorter than the length of the section of one pixel along the vertical direction, and the light emitted from some of the sub-pixels in the band-like region is propagated to the position of the right eye of the user, Based on the optical element that propagates the light emitted from the sub-pixels of the band-like region to the position of the user's left eye, the camera that images the user's right eye and left eye, and the image captured by the camera, The right eye and the left eye of the user Determining a dimension position, based on the three-dimensional position of the right eye and the left eye, and a controller for controlling the image to be displayed on the display surface.

  The head-up display system according to the present disclosure includes a display surface including a plurality of subpixels arranged in a grid along the horizontal direction and the vertical direction, and a plurality of strip-like regions extending in a predetermined direction on the display surface. An optical element that defines a light beam direction of image light emitted from a subpixel, wherein an end of the band-shaped region crosses over the plurality of subpixels and is a length of a section of one pixel along a horizontal direction. Is shorter than the length of the section of one pixel along the vertical direction, and the light emitted from some of the sub-pixels in the band-like region is propagated to the position of the right eye of the user, Based on the optical element that propagates the light emitted from the sub-pixels of the band-like region to the position of the user's left eye, the camera that images the user's right eye and left eye, and the image captured by the camera, The right eye of the user And a controller for determining a three-dimensional position of the left eye and controlling an image to be displayed on the display surface based on the three-dimensional positions of the right eye and the left eye, and the image emitted from the display surface And an optical system that projects light so as to form a virtual image in the field of view of the user.

  The moving body according to the present disclosure includes a display surface including a plurality of subpixels arranged in a grid along the horizontal direction and the vertical direction, and the subpixels for each of a plurality of strip-like regions extending in a predetermined direction on the display surface. An optical element that defines a light beam direction of image light emitted from the edge of the band-shaped region, which traverses the plurality of subpixels and has a vertical length of one pixel along the horizontal direction. The light that is shorter than the length of the section for one pixel along the direction and is emitted from the subpixels of some of the band-like regions is propagated to the position of the user's right eye, and the other part of the band-like Based on the optical element that propagates the light emitted from the subpixels of the region to the position of the user's left eye, the camera that captures the user's right eye and left eye, and the image captured by the camera, the user The three-dimensional positions of the right eye and the left eye of Based on the three-dimensional positions of the right eye and the left eye, a controller that controls an image displayed on the display surface, and the image light emitted from the display surface is a virtual image in a user's field of view. And a head-up display system including an optical system for projecting to form an image.

  According to an embodiment of the present disclosure, it is possible to reduce crosstalk while suppressing the occurrence of moire and ensuring an aperture ratio.

1 is a schematic configuration diagram of a three-dimensional display system according to a first embodiment. It is a figure which shows the example of HUD carrying the three-dimensional display system which concerns on 1st Embodiment. It is a figure which shows the example of the vehicle carrying the HUD shown in FIG. It is the figure which looked at the display panel and optical element shown in FIG. 1 from the optical element side. FIG. 5A is a schematic diagram of a display device of a three-dimensional display device according to the first embodiment, FIG. 5A is a schematic diagram showing a visible region of a display surface at a reference position, and FIG. It is a schematic diagram which shows the visible region of a display surface. It is a schematic diagram for demonstrating the relationship between an interocular distance, a suitable viewing distance, a gap, a barrier pitch, and an image pitch. It is a schematic diagram for demonstrating the relationship between the displacement amount of the position of an eye, and the sub pixel which displays an image. FIG. 8A is a schematic diagram of a three-dimensional display device according to the prior art, FIG. 8A is a schematic diagram showing a visible area of a display surface at a reference position, and FIG. It is a schematic diagram shown. FIG. 9A is a schematic diagram of a three-dimensional display device according to a second embodiment, FIG. 9A is a schematic diagram showing a visible region of a display surface at a reference position, and FIG. 9B is a schematic diagram of a display surface at a displacement position. It is a schematic diagram which shows a visible region. FIG. 10A is a schematic diagram of a three-dimensional display device according to a third embodiment, FIG. 10A is a schematic diagram showing a visible area of a display surface at a reference position, and FIG. 10B is a schematic diagram of a display surface at a displacement position. It is a schematic diagram which shows a visible region. FIG. 11A is a schematic diagram of a three-dimensional display device according to a fourth embodiment, FIG. 11A is a schematic diagram showing a visible area of a display surface at a reference position, and FIG. 10B is a diagram of the display surface at a displacement position. It is a schematic diagram which shows a visible region. FIG. 12A is a schematic diagram of a three-dimensional display device according to a fifth embodiment, FIG. 12A is a schematic diagram showing a visible area of a display surface at a reference position, and FIG. 12B is a display surface at a displacement position. It is a schematic diagram which shows the visible region. FIG. 13A is a schematic diagram of a three-dimensional display device according to a sixth embodiment, FIG. 13A is a schematic diagram showing a visible area of a display surface at a reference position, and FIG. 13B is a display at a displacement position. It is a schematic diagram which shows the visible region of a surface. It is a schematic block diagram of the three-dimensional display apparatus at the time of using an optical element as a lenticular lens.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

  A three-dimensional display system 1 according to an embodiment of the present disclosure includes a detection device 2 and a three-dimensional display device 3 as illustrated in FIG. 1.

  As shown in FIG. 2, the three-dimensional display system 1 can be mounted on a head-up display 100. The head-up display 100 is also referred to as HUD (Head Up Display). The HUD 100 includes a three-dimensional display system 1, an optical member 110, and a projection member 120 having a projection surface 130. The HUD 100 causes the image light emitted from the three-dimensional display system 1 to reach the projection target member 120 via the optical member 110. The HUD 100 causes the image light reflected by the projection member 120 to reach the left eye and right eye of the user. That is, the HUD 100 advances image light from the three-dimensional display system 1 to the left eye and right eye of the user along the optical path 140 indicated by a broken line. The user can visually recognize the image light that has reached along the optical path 140 as a virtual image 150. The three-dimensional display system 1 can provide a stereoscopic view according to the movement of the user by controlling the display according to the positions of the left eye and the right eye of the user.

  As shown in FIG. 3, the HUD 100 and the three-dimensional display system 1 may be mounted on a moving body. The HUD 100 and the three-dimensional display system 1 may share part of the configuration with other devices and parts included in the moving body. For example, the moving body may use the windshield as a part of the HUD 100 and the three-dimensional display system 1. When a part of the configuration is also used as another device or part provided in the moving body, the other configuration can be referred to as a HUD module or a three-dimensional display component. The three-dimensional display system 1 and the three-dimensional display device 3 may be mounted on a moving body. The “mobile body” in the present disclosure includes a vehicle, a ship, and an aircraft. “Vehicle” in the present disclosure includes, but is not limited to, automobiles and industrial vehicles, and may include railway vehicles, domestic vehicles, and fixed-wing aircraft that run on the runway. The automobile includes, but is not limited to, a passenger car, a truck, a bus, a two-wheeled vehicle, a trolley bus, and the like, and may include another vehicle that travels on a road. Industrial vehicles include industrial vehicles for agriculture and construction. Industrial vehicles include but are not limited to forklifts and golf carts. Industrial vehicles for agriculture include, but are not limited to, tractors, tillers, transplanters, binders, combines, and lawn mowers. Industrial vehicles for construction include, but are not limited to, bulldozers, scrapers, excavators, crane trucks, dump trucks, and road rollers. Vehicles include those that travel by human power. The vehicle classification is not limited to the above. For example, an automobile may include an industrial vehicle capable of traveling on a road, and the same vehicle may be included in a plurality of classifications. Ships in the present disclosure include marine jets, boats, and tankers. The aircraft in the present disclosure includes fixed wing aircraft and rotary wing aircraft.

  The detection device 2 detects the position of either the left eye or the right eye of the user and outputs it to the controller 7. The detection device 2 may include a camera, for example. The detection apparatus 2 may photograph a user's face with a camera. The detection apparatus 2 may detect the position of at least one of the left eye and the right eye from a captured image of the camera. The detection device 2 may detect the position of at least one of the left eye and the right eye as coordinates in a three-dimensional space from a captured image of one camera. The detection device 2 may detect at least one position of the left eye and the right eye as coordinates in a three-dimensional space from the captured images of two or more cameras.

  The detection device 2 does not include a camera and may be connected to a camera outside the device. The detection device 2 may include an input terminal for inputting a signal from a camera outside the device. The camera outside the apparatus may be directly connected to the input terminal. The camera outside the apparatus may be indirectly connected to the input terminal via a shared network. The detection device 2 that does not include a camera may include an input terminal through which the camera inputs a video signal. The detection device 2 that does not include a camera may detect the position of at least one of the left eye and the right eye from the video signal input to the input terminal.

  The detection device 2 may include a sensor, for example. The sensor may be an ultrasonic sensor or an optical sensor. The detection device 2 may detect the position of the user's head with a sensor, and may detect the position of at least one of the left eye and the right eye based on the position of the head. The detection device 2 may detect the position of at least one of the left eye and the right eye as coordinates in a three-dimensional space with one or more sensors.

  The detection device 2 may detect the movement distance of the left eye and the right eye along the eyeball arrangement direction based on the detection result of at least one position of the left eye and the right eye.

  The three-dimensional display system 1 may not include the detection device 2. When the three-dimensional display system 1 does not include the detection device 2, the controller 7 may include an input terminal that inputs a signal from a detection device outside the device. The detection device outside the device may be connected to the input terminal. The detection device outside the device may use an electric signal and an optical signal as a transmission signal for the input terminal. The detection device outside the device may be indirectly connected to the input terminal via a shared network. The controller 7 may receive position coordinates indicating the position of at least one of the left eye and the right eye acquired from a detection device outside the device. Further, the controller 7 may calculate the movement distance of the left eye and the right eye along the horizontal direction based on the position coordinates.

  The three-dimensional display device 3 includes an irradiator 4, a display panel 5, a parallax barrier 6 as an optical element, and a controller 7.

  The irradiator 4 is disposed on one surface side of the display panel 5 and irradiates the display panel 5 in a plane. The irradiator 4 may include a light source, a light guide plate, a diffusion plate, a diffusion sheet, and the like. The irradiator 4 emits irradiation light from a light source, and equalizes the irradiation light in the surface direction of the display panel 5 by a light guide plate, a diffusion plate, a diffusion sheet, or the like. The irradiator 4 emits the uniformed light toward the display panel 5.

  The display panel 5 may be a display panel such as a transmissive liquid crystal display panel. As shown in FIG. 4, the display panel 5 has a plurality of partitioned areas partitioned in a horizontal direction and a vertical direction by a grid-like black matrix 52 on a plate-like surface. The plurality of partitioned areas may be referred to as the display surface 51. Each sub-region corresponds to one subpixel. The black matrix 52 partitions a plurality of partition regions by a first black line 52a extending in the vertical direction and a second black line 52b extending in the horizontal direction. In the black matrix 52, a plurality of first black lines 52a are arranged in the horizontal direction at a constant pitch, for example, and a plurality of second black lines 52b are arranged in the vertical direction at a constant pitch, for example. The plurality of subpixels are arranged in a matrix in the horizontal direction and the vertical direction. Each subpixel corresponds to each color of R, G, and B, and one pixel can be formed by combining three subpixels of R, G, and B as a set. One pixel can be called one pixel. The horizontal direction is, for example, a direction in which a plurality of subpixels constituting one pixel are arranged. The vertical direction is, for example, a direction in which subpixels of the same color are arranged. The display panel 5 is not limited to a transmissive liquid crystal panel, and other display panels such as an organic EL can be used. When a self-luminous display panel is used as the display panel 5, the irradiator 4 is unnecessary.

  The parallax barrier 6 defines the light ray direction of the image light emitted from the subpixel. As shown in FIG. 4, the parallax barrier 6 changes the light beam direction, which is the propagation direction of the image light emitted from the subpixel, for each of the plurality of opening regions 62 extending in a predetermined direction on the display device. The visible range of the image light emitted from the sub-pixel is determined by the parallax barrier 6. As shown in FIG. 1, the parallax barrier 6 is located on the opposite side of the irradiator 4 with respect to the display panel 5. The parallax barrier 6 can be positioned on the irradiator 4 side of the display panel 5.

  Specifically, the parallax barrier 6 includes a plurality of light shielding surfaces 61 that shield image light. The plurality of light shielding surfaces 61 define an opening region 62 between the light shielding surfaces 61 adjacent to each other. The opening region 62 has a higher light transmittance than the light shielding surface 61. The light shielding surface 61 has a light transmittance lower than that of the opening region 62.

  The opening region 62 is a portion that transmits light incident on the parallax barrier 6. The opening region 62 may transmit light with a transmittance equal to or higher than the first predetermined value. The first predetermined value may be 100%, for example, or a value close to 100%. The light blocking surface 61 is a portion that blocks and does not transmit light incident on the parallax barrier 6. In other words, the light shielding surface 61 blocks an image displayed on the display device 10. The light blocking surface 61 may block light with a transmittance equal to or lower than the second predetermined value. The second predetermined value may be 0%, for example, or a value close to 0%.

  The opening regions 62 and the light shielding surfaces 61 are alternately arranged in the horizontal direction and the vertical direction. The edge part of the opening area | region 62 prescribes | regulates the light ray direction of the image light inject | emitted from a sub pixel for every some strip | belt-shaped area | region extended in the predetermined direction on the display surface 51. FIG. The end of the band-shaped region crosses over the plurality of subpixels, and the length of the section for one pixel along the horizontal direction is shorter than the length of the section for one pixel along the vertical direction.

  If the line indicating the end of the opening area 62 is along the vertical direction, moire is easily recognized in the display image due to an error included in the arrangement of the subpixels 11 or the size of the opening area 62. When the line indicating the end of the opening area 62 extends in a direction having a predetermined angle with respect to the vertical direction, the moiré pattern is displayed in the display image regardless of the arrangement of the subpixels 11 or the error included in the dimension of the opening area 62. Becomes difficult to recognize.

  The parallax barrier 6 may be composed of a film or a plate-like member having a transmittance less than the second predetermined value. In this case, the light shielding surface 61 is composed of the film or plate member. The opening area 62 is configured by an opening provided in a film or a plate-like member. A film may be comprised with resin and may be comprised with another material. The plate-like member may be made of resin or metal, or may be made of other materials. The parallax barrier 6 is not limited to a film or a plate-like member, and may be composed of other types of members. In the parallax barrier 6, the base material may have a light shielding property, and an additive having a light shielding property may be contained in the base material.

  The parallax barrier 6 may be composed of a liquid crystal shutter. The liquid crystal shutter can control the light transmittance according to the applied voltage. The liquid crystal shutter may be composed of a plurality of pixels and may control the light transmittance in each pixel. The liquid crystal shutter may be formed by arbitrarily forming a region having a high light transmittance or a region having a low light transmittance. When the parallax barrier 6 is configured by a liquid crystal shutter, the opening region 62 may be a region having a transmittance equal to or higher than the first predetermined value. When the parallax barrier 6 is configured by a liquid crystal shutter, the light shielding surface 61 may be a region having a transmittance equal to or lower than the second predetermined value.

  The parallax barrier 6 propagates the image light emitted from the subpixels of some of the opening regions 62 to the position of the right eye of the user, and the image light emitted from the subpixels of the other part of the opening regions 62. , Propagate to the position of the user's left eye. The parallax barrier 6 is located a predetermined distance away from the display surface 51. The parallax barrier 6 includes light shielding surfaces 61 arranged in a slit shape.

  When the image light transmitted through the opening area 62 of the parallax barrier 6 reaches the user's eyes, the left eye of the user corresponds to the opening area 62 as a band-like area as shown in FIG. Can be visually recognized. Since the image light is blocked by the light blocking surface 61 of the parallax barrier 6, the left eye of the user cannot visually recognize the invisible region 54 a corresponding to the light blocking surface 61.

  The controller 7 is connected to each component of the three-dimensional display system 1 and controls each component. The controller 7 is configured as a processor, for example. The controller 7 may include one or more processors. The processor may include a general-purpose processor that reads a specific program and executes a specific function, and a dedicated processor specialized for a specific process. The dedicated processor may include an application specific integrated circuit (ASIC). The processor may include a programmable logic device (PLD). The PLD may include an FPGA (Field-Programmable Gate Array). The controller 7 may be one of SoC (System-on-a-Chip) and SiP (System In a Package) in which one or a plurality of processors cooperate. The controller 7 includes a storage unit, and may store various information or a program for operating each component of the three-dimensional display system 1 in the storage unit. The storage unit may be configured by, for example, a semiconductor memory. The storage unit may function as a work memory for the controller 7.

  The controller 7 determines a sub-pixel for displaying the left-eye image and a sub-pixel for displaying the right-eye image according to the position of the user's eyes and the configuration of the display panel 5 and the parallax barrier 6. Here, in order to describe a method in which the controller 7 determines subpixels for displaying each image, first, the display panel 5 and the parallax barrier 6 will be described in detail.

  As shown in FIG. 5, the horizontal length of the sub-pixels P displayed on the display surface 51 of the display panel 5 is Hp, and the vertical length is Vp. In this case, the absolute value of the slope of the straight line formed by the end of the visible area 53 that is an area on the image that can be seen by the left eye through the opening area 62 is an integer a and b (b ≧ 2 and It is expressed as b × Vp / (a × Hp) using b> a). In the example shown in FIG. 5A, a = 1 and b = 2. That is, the inclination of the two straight lines that define the opening area 62 of the display surface 51 with respect to the horizontal direction is 2 × Vp / (1 × Hp).

  On the display surface 51, n pixels in the horizontal direction, b pixels in the vertical direction, and (n × b) subpixels P1 to Pm arranged in succession (hereinafter referred to as n × b = m). The left eye image is displayed in the first sub-pixel group Pgl including. m is a value satisfying m ≧ a + b + 1. Further, the first subpixel group Pgl arranged in the same manner is arranged on the display surface 51 at a position adjacent to the first subpixel group Pgl in the vertical direction and shifted by one subpixel in the horizontal direction. The left eye image is displayed.

  Further, m subpixels P (m + 1) to P (2 × m) that are adjacent to the first subpixel group Pgl in the horizontal direction and are arranged in succession in the horizontal direction on the display surface 51. The right eye image is displayed in the second subpixel group Pgr including). In this way, n consecutive left-eye images are displayed in the horizontal direction, and n consecutive right-eye images are displayed adjacent to the left-eye image in the horizontal direction. The image pitch k is expressed as 2n × Hp.

  In the example shown in FIG. 5A, the display surface 51 includes a first subpixel group including six subpixels P1 to P6 arranged in succession, three in the horizontal direction and two in the vertical direction. The left eye image is displayed on Pgl. Further, on the display surface 51, different left-eye images are displayed in the similarly arranged subpixel groups Pgl, which are adjacent to the first subpixel group Pgl in the vertical direction and shifted by one subpixel in the horizontal direction. . In addition, on the display surface 51, six subpixels P7 to P12 are arranged adjacent to each other in the horizontal direction of the first subpixel group Pgl and arranged in succession three in the horizontal direction and two in the vertical direction. The right eye image is displayed in the second subpixel group Pgr that includes the second subpixel group Pgr.

Further, as shown in FIG. 6, the barrier pitch Bp which is the arrangement interval of the opening regions 62 of the parallax barrier 6 and the gap g between the display surface 51 and the parallax barrier 6 are d and the appropriate viewing distance is used. When the distance between the eyes of the person is E, the following expressions (1) and (2) are established.
E: d = (n × Hp): g Formula (1)
d: Bp = (d + g): (2 × n × Hp) Formula (2)

  The barrier opening width Bw is the width of the opening region 62. As described above, when m = n × b, the barrier opening width Bw depends on the appropriate viewing distance d and the gap g so that the horizontal width of the visible region 53 is (m−2) × Hp / b. It is prescribed.

  In the example shown in FIG. 5A, since three left eye images and three right eye images are arranged in the horizontal direction and two in the vertical direction, n = 3, b = 2, and m = 3 × 2 = 6. As for the barrier pitch Bp and the barrier opening width Bw, the image pitch k is (2m × Hp) / b = 2 × 6 × Hp / 2 = 6 × Hp, and the width of the visible region 53 is (m−2) × Hp / b =. (6-2) × Hp / 2 = 2 × Hp.

  The barrier aperture ratio, which is the ratio of the width of the visible region 53 to the image pitch k, is ((m−2) × Hp / b) / ((2n × Hp) / b) = (m−2) / (2m). is there. In the example shown in FIG. 5A, the barrier aperture ratio is (2 × Hp / (6 × Hp)) × 100 = 33%.

  The controller 7 uses the displacement from the reference position based on the position coordinates of the left eye and the right eye detected by the detection device 2 to determine a subpixel that displays the left eye image and a subpixel that displays the right eye image. Decide each. In the following description, a method will be described in which the controller 7 determines a sub-pixel for displaying a left eye image using a displacement from a reference position based on the position coordinates of the left eye. The same applies to the method in which the controller 7 determines the sub-pixel for displaying the right-eye image using the displacement from the reference position based on the position coordinates of the right eye.

  Here, an image recognized by the user's left eye when the user's left eye is at a displacement position in the displacement direction from the reference position will be described. The displacement direction is a direction along a line connecting the left and right eyes when the user views the display surface 51 from the normal direction of the display surface 51. The displacement position is a position where the user's eyes are displaced from the reference position.

  As already described with reference to FIG. 5A, at the reference position, the left eye image is displayed on the subpixels P1 to P6, and the right eye image is displayed on the subpixels P7 to P12. At this time, as shown in FIG. 5B, the visible region 53b at the displacement position is different from the visible region 53a at the reference position. Specifically, the portion of the subpixel P1 included in the visible region 53b at the displacement position is smaller than the portion of P1 included in the visible region 53a at the reference position. Further, the visible region 53b at the displacement position includes a portion of the sub-pixel P7 that is not included in the visible region 53a at the reference position. Therefore, at the displacement position, crosstalk in which the right eye image and the left eye image are mixed occurs in the left eye of the user. Specifically, the portion of the sub-pixel P7 included in the visible region 53b is 1/16 of the entire sub-pixel P7, and there are four sub-pixels included in the entire visible region 53b. The crosstalk value is 1/16/4 = 1.6%.

  When the visible region 53 is on the right side of the visible region 53b shown in FIG. 5B, the controller 7 displays the left eye image on the subpixel P7 and the right eye image on the subpixel P1. When the position on the display surface 51 to which the user refers through the opening area 62 is on the left side of the state shown in FIG. 5B, the left eye image is displayed on the subpixel P1, and the right eye image is displayed on the subpixel P7. Is displayed. Thereby, in any case, the crosstalk value for the left eye does not exceed 1.6%. That is, the maximum value of crosstalk is 1.6%.

  In other words, the controller 7 determines subpixels for displaying the left eye image so that the crosstalk does not exceed the maximum value. Specifically, when the visible region 53 is on the left side of the state shown in FIG. 5B, the controller 7 sets the sub-pixels P1 to P6 that display the left eye image, and from the state shown in FIG. In the case of the right side, the sub-pixels P2 to P7 that display the left eye image are used.

  The controller 7 determines a sub-pixel for displaying a left-eye image based on a displacement amount in the displacement direction of the left eye detected by the detection device 2 and a displacement threshold value. The displacement threshold is E / (n × b), where E is the interocular distance that is the distance between both eyes of the user. When the user's eye moves E / (n × b) in the displacement direction, the sub-pixel included in the left-eye image becomes a sub-pixel adjacent to the right one of the sub-pixels included in the left-eye image before the movement. . The displacement amount of the user's eyes is calculated based on the position coordinates of the user's eyes. When the displacement amount of the left eye becomes equal to or greater than the threshold value, the controller 7 sets the subpixel that displays the left-eye image as one subpixel adjacent to the right.

  As described above, in each row of the display surface 51, three sub-pixels that display the left-eye image are arranged in succession, and three sub-pixels that display the right-eye image adjacent to these three sub-pixels. Sub-pixels are continuously arranged. Therefore, as shown in FIG. 7, when the left eye is at the first position Eye1, the image light emitted from the subpixels P2, P4, and P6 constituting the predetermined row of the first subpixel is The light passes through the opening area 62 and reaches the left eye. The first position Eye1 is a position where the crosstalk becomes the maximum value as shown in FIG.

  When the amount of displacement detected by the detection device 2 becomes E / (3 × 2) in the right direction (corresponding to the second position Eye2 in FIG. 7), the controller 7 changes the subpixel that displays the left-eye image to the subpixel. Subpixels P12, P2, and P4 adjacent to the left of P2, P4, and P6, respectively. Similarly, when the amount of displacement becomes 2 × E / (3 × 2) in the right direction (corresponding to the third displacement position Eye3 in FIG. 7), the controller 7 sub-pixels that display the left eye image Subpixels P10, P12, and P2 adjacent to the left of the pixels P10, P12, and P2, respectively. When two subpixels are controlled together as shown in FIG. 5 and the like, the controller 7 changes one by one in 12 subpixels in two rows. The controller 7 displays the left eye image on the subpixels P1 to 6 at the position corresponding to Eye1, and displays the left eye image on the subpixels P12 and P1 to 5 on the position corresponding to Eye2, in which case Eye3 Left eye images are displayed on the subpixels P11, 12, and P1 to P4 at corresponding positions.

  As described above, in the first embodiment, the end of the belt-like region 61 of the optical element is the length Hp of one pixel of the subpixel in the horizontal direction, and the section across the display surface 51 is perpendicular to the subpixel. It is configured to cross the vertical direction longer than the length Vp of one pixel in the direction. That is, the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp).

  In the conventional technique, the absolute value of the slope of the straight line formed by the end of the visible region 53 is 1 × Vp / (1 × Hp). Similar to the first embodiment described above, the display surface 51 of the prior art designed so that the barrier aperture ratio is 33% and no crosstalk occurs at the reference position is as shown in FIG. In addition, a first subpixel group Pgl in which subpixels in one row and three columns for displaying a left-eye image are arranged, and a second subpixel group in which subpixels in one row and three columns for displaying a right-eye image are arranged. Pgr.

  In this case, the visible region 53b at the displacement position where the crosstalk is maximized shown in FIG. 8B includes the sub-pixel P4 portion that displays the right-eye image. Causes crosstalk in which the right eye image and the left eye image are mixed. Specifically, the portion of the sub-pixel P4 included in the visible region 53b is 1/8 of the entire sub-pixel P4, and there are two sub-pixels included in the entire visible region 53b. The crosstalk value is 1/8/2 = 6.25%. As described above, the crosstalk value in the first embodiment is 1.6%, which is reduced compared to the crosstalk value of 6.25% in the related art having the same aperture ratio.

  Since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the black in the sub-pixel that displays the image causing the crosstalk generated in the user's eyes Since the ratio occupied by the matrix 52 is increased, the crosstalk is further reduced. Specifically, the maximum value of crosstalk in the present embodiment is 1.6%, but a part of the portion included in the visible region 53b of the subpixel P7 that causes crosstalk is the black matrix 52. Therefore, in practice, the maximum value of crosstalk is smaller than 1.6%.

<Second Embodiment (when barrier opening ratio is 25%)>
Next, a second embodiment of the present disclosure will be described with reference to the drawings. Since the schematic configuration diagram of the second embodiment is the same as the schematic configuration diagram of the first embodiment, description thereof is omitted. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  As shown in FIG. 9, in the second embodiment, as in the first embodiment, a plurality of first subpixel groups Pgl and second subpixel groups Pgr are arranged in 2 rows and 3 columns, respectively. Of subpixels. That is, n = 3, b = 2, and m = n × b = 3 × 2 = 6. In the first embodiment, the barrier opening width Bw is set such that the visible region 53a has a width of (m−2) × Hp / b. In the second embodiment, the barrier opening width Bw is The width of the visible region 53a is less than (m−2) × Hp / b. Specifically, the barrier pitch Bp and the barrier opening width Bw are such that the image pitch k is 2n × Hp = 2 × 3 × Hp = 6 × Hp, and the width of the visible region 53 is (m−2) × Hp / b = ( 6-2) It is defined to be less than * Hp / 2 = 2 * Hp. Here, from the value (m + 1) obtained by adding 1 to the number of sub-pixels of one eye to be the starting position of the sub-pixel of the other eye, the maximum number of sub-pixels that can overlap the edge of the visible region 53 is 1 The value obtained by subtracting the value obtained by adding (a + b + 1) and multiplying by Hp / b ((m + 1) − (a + b + 1)) Hp / b = ((6 + 1) − (1 + 2 + 1)) Hp / 2 = 1.5Hp The opening width was Bw. For this reason, in the second embodiment, the barrier aperture ratio is (1.5 × Hp / (6 × Hp)) × 100 = 25%.

  As shown in FIG. 9A, at the reference position, the left eye image is displayed on the subpixels P1 to P6, and the right eye image is displayed on the subpixels P7 to P12. As shown in FIG. 9A, the visible region 53b at the displacement position is different from the visible region 53a at the reference position. Specifically, the portion of the subpixel P1 included in the visible region 53a at the reference position is not included in the visible region 53b at the displacement position. In addition, the subpixels P5 and P6 included in the visible region 53a at the reference position are larger in the visible region 53b at the displacement position. At this time, since the left eye image is displayed on all the subpixels included in the visible region 53b of the left eye, the crosstalk value is 0%.

  When the user's eyes are further displaced from the state shown in FIG. 9B and the visible region 53b is further shifted to the right side, a part of the subpixel P7 is included, and the subpixel P1 is not included at all. . At this time, the controller 7 displays the left eye image on the subpixel P7 and displays the right eye image on the subpixel P1. As a result, the left eye image is displayed on each of the sub-pixels P2 to P7 referred to by the left eye, and the crosstalk value is kept at 0%.

  As described above, in the second embodiment, since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the crosstalk value is the same. The same effect as that of the first embodiment is obtained, which is reduced as compared with the crosstalk value of the prior art having an aperture ratio. In the second embodiment, the black matrix 52 occupies a larger proportion of subpixels that display an image that causes crosstalk that occurs in the eyes of the user, so that crosstalk is reduced. The same effects as those of the embodiment are obtained.

  In the second embodiment, the barrier opening width Bw is such that the visible region 53 is less than the width of (m−2) × Hp / b, so that the crosstalk of the first embodiment is smaller than that of the first embodiment. The maximum value can be reduced.

<Third Embodiment (When Subpixel Group is 2 Rows and 2 Columns)>
Next, a third embodiment of the present disclosure will be described with reference to the drawings. Since the schematic configuration diagram of the third embodiment is the same as the schematic configuration diagram of the first embodiment, description thereof is omitted. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  In the first embodiment, the first sub-pixel group Pgl and the second sub-pixel group Pgr each include a plurality of sub-pixels arranged in 2 rows and 3 columns. In the third embodiment, As shown in FIG. 10, the first subpixel group Pgl and the second subpixel group Pgr each include a plurality of subpixels arranged in 2 rows and 2 columns. That is, n = 2, b = 2, and m = n × b = 2 × 2 = 4. As for the barrier pitch Bp and the barrier opening width Bw, the image pitch k is 2n × Hp = 2 × 2 × Hp = 4 × Hp, and the width of the visible region 53 is (m−2) × Hp / b = (4-2) ×. It is defined to be Hp / 2 = 1 × Hp. For this reason, in the third embodiment, the barrier aperture ratio is (1 × Hp / (4 × Hp)) × 100 = 25%.

  As shown in FIG. 10A, at the reference position, the left eye image is displayed on the subpixels P1 to P4, and the right eye image is displayed on the subpixels P5 to P8. At this time, since the sub-pixels referred to by the left eye are a part of the sub-pixels P1 to P4, the crosstalk value is 0%.

  Here, when the position of the left eye is displaced, as shown in FIG. 10B, the sub-pixels included in the visible region 53b of the left eye are different from the visible region 53a at the reference position. Specifically, the portion of the subpixel P1 included in the visible region 53b at the displacement position is smaller than the portion of the subpixel P1 included in the visible region 53a at the reference position. In addition, the visible region 53b at the displacement position refers to the portion of the subpixel P5 that is not included in the visible region 53a at the reference position. Since the right eye image is displayed in the subpixel P5, crosstalk in which the left eye image and the right eye image are mixed occurs in the left eye of the user at the displacement position. Specifically, the portion of the subpixel P5 included in the visible region 53b at the displacement position is 1/16 of the entire subpixel P5, and the number of subpixels included in the entire visible region 53b is two. The crosstalk value generated in the eye is 1/16/2 = 3.125%.

  When the visible region 53b shown in FIG. 10B is further shifted to the right side, the portion of the subpixel P5 included in the visible region 53b is further increased, and the portion of the subpixel P1 is further decreased. At this time, the controller 7 causes the sub-pixel P5 to display the left-eye image and causes the sub-pixel P1 to refer to the right-eye image. Thereby, in any case, the crosstalk value for the left eye does not exceed 3.125%.

  In other words, the controller 7 determines subpixels for displaying the left eye image so that the crosstalk does not exceed the maximum value. In the example shown in FIG. 10, when the controller 7 is on the left side of the state shown in FIG. 10B, the controller 7 is the subpixels P <b> 1 to P <b> 4 that display the left eye image, and is on the right side of the state shown in FIG. In this case, the sub-pixels P2 to P5 display the left eye image.

  As described above, in the third embodiment, since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the crosstalk value is the same. The same effect as that of the first embodiment is obtained, which is reduced as compared with the crosstalk value of the prior art having an aperture ratio. In the third embodiment, the black matrix 52 occupies a larger proportion of subpixels that display an image that causes crosstalk that occurs in the eyes of the user, so that crosstalk is reduced. The same effects as those of the embodiment are obtained.

<Fourth Embodiment (when a = 1, b = 3, the subpixel group is 3 rows × 2 columns)>
Next, a fourth embodiment of the present disclosure will be described with reference to the drawings. Since the schematic configuration diagram of the fourth embodiment is the same as the schematic configuration diagram of the first embodiment, description thereof is omitted. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  In the first embodiment, a = 1 and b = 2, that is, the case where the inclination of the barrier inclination angle is 2 × Vp / (1 × Hp) has been described. In the fourth embodiment, FIG. As shown, a = 1 and b = 3, ie the slope of the barrier tilt angle is 3 × Vp / (1 × Hp). The first subpixel group Pgl and the second subpixel group Pgr each have a plurality of subpixels arranged in 3 rows and 2 columns. That is, n = 2 and b = 3, and m = n × b = 2 × 3 = 6. The barrier pitch Bp and the barrier opening width Bw are such that the image pitch k is 2n × Hp = 2 × 2 = 4 × Hp, and the width of the visible region 53 is (m−2) × Hp / b = (6-2) × Hp / 3 = (4/3) × It is defined to be 1 × Hp less than Hp. For this reason, in the second embodiment, the barrier aperture ratio is (1 × Hp / (4 × Hp)) × 100 = 25%.

  As shown in FIG. 11A, at the reference position, the left eye image is displayed on the subpixels P1 to P6, and the right eye image is displayed on the subpixels P7 to P12. At this time, since the visible region 53a of the left eye is a part of each of the subpixels P1 to P6 that display the left eye image, the crosstalk value is 0%.

  Here, when the position of the left eye is displaced, as shown in FIG. 11B, the left eye visible area 53b is different from the left eye visible area 53a at the reference position. Specifically, at the displacement position, the portion of the subpixel P1 included in the visible region 53b becomes smaller, and at the reference position, a portion of the subpixel P7 that was not included in the visible region 53a is included in the visible region 53b. Since the right eye image is displayed on the sub-pixel P7, crosstalk in which the left eye image and the right eye image are mixed occurs in the left eye of the user at the displacement position. Specifically, the portion of the subpixel P7 included in the visible region 53b of the left eye at the displacement position is 1/24 of the entire subpixel P7. Further, since the number of subpixels included in the visible region 53b of the left eye is three, the crosstalk value occurring in the left eye is 1/24/3 = 1.39%.

  When the visible region 53b shown in FIG. 11B is further shifted to the right side, the portion of the subpixel P7 included in the visible region 53b of the left eye is further increased, and the portion of the subpixel P1 is decreased. At this time, the controller 7 causes the sub-pixel P7 to display the left-eye image and causes the sub-pixel P1 to refer to the right-eye image. Thereby, in any case, the crosstalk value for the left eye does not exceed 1.39%.

  In other words, the controller 7 determines subpixels for displaying the left eye image so that the crosstalk does not exceed the maximum value. In the example shown in FIG. 11, when the controller 7 is on the left side of the state shown in FIG. 11B, the controller 7 sets the sub-pixels P <b> 1 to P <b> 6 that display the left eye image, and on the right side of the state shown in FIG. In some cases, the sub-pixels P2 to P7 display the left eye image.

  As described above, in the fourth embodiment, since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the crosstalk value is the same. The same effect as that of the first embodiment is obtained, which is reduced as compared with the crosstalk value of the prior art having an aperture ratio. In the fourth embodiment, since the ratio of the black matrix 52 in the sub-pixels that display the image that causes the crosstalk generated in the user's eyes increases, the crosstalk is reduced first. The same effects as those of the embodiment are obtained.

<Fifth Embodiment (in the case where the barrier aperture ratio is 50% and the subpixel group is in 2 rows and 6 columns>
Next, a fifth embodiment of the present disclosure will be described with reference to the drawings. Since the schematic configuration diagram of the fifth embodiment is the same as the schematic configuration diagram of the first embodiment, the description thereof is omitted. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  In the first embodiment, the barrier opening width Bw is set such that the visible region 53 has a width of (m−2) × Hp / b. In the fifth embodiment, the barrier opening width Bw is The visible region 53 has a width larger than the width of (m−2) × Hp / b. Specifically, as shown in FIG. 12, in the fifth embodiment, the first sub-pixel group Pgl and the second sub-pixel group Pgr each include a plurality of sub-pixels arranged in 2 rows and 3 columns. Including. That is, n = 3, b = 2, and m = n × b = 3 × 2 = 6. As for the barrier pitch Bp and the barrier opening width Bw, the image pitch k is 2n × Hp = 6 × Hp, and the width of the visible region 53 is (m−2) × Hp / b = (6-2) × Hp / 2 = 2 ×. It is defined to be 3 × Hp, which is larger than Hp. For this reason, in the second embodiment, the barrier aperture ratio is (3 × Hp / (6 × Hp)) × 100 = 50%.

  In this case, the visibility is 50% corresponding to the barrier aperture ratio. As shown in FIG. 12A, at the reference position, the left eye image is displayed on the subpixels P1 to P6, and the right eye image is displayed on the subpixels P7 to P12. At this time, the sub-pixels included in the visible region 53a of the left eye are at least a part of each of the sub-pixels P1 to P6 and a part of the sub-pixels P12 and P7. Since the right eye image is displayed on the sub-pixels P12 and P7, crosstalk occurs in the left eye of the user. The ratio of the portion of the subpixel P12 included in the left eye visible region 53a to the entire subpixel P12 is 1/4. Similarly, the ratio of the portion of the subpixel P7 that is included in the visible region 53a to the entire subpixel P7 is 1/4. Further, since there are six subpixels included in the entire visible region 53a of the left eye, the crosstalk value occurring in the left eye is (1/4 + 1/4) /6=8.3%.

  Here, when the position of the left eye is displaced, as shown in FIG. 12B, the left eye visible region 53b is different from the left eye visible region 53a at the reference position. Specifically, the subpixels P1 and P12 included in the left eye visible region 53b at the displacement position are smaller than the subpixels P1 and P12 included in the left eye visible region 53a at the reference position. In addition, the area of the sub-pixel P7 included in the left eye visible area 53b at the displacement position is increased. Further, the visible region 53b at the displacement position includes a sub-pixel P8 that was not included in the visible region 53a at the reference position. Since the right eye image is displayed in the subpixels P12, P7, and P8, crosstalk in which the left eye image and the right eye image are mixed occurs in the left eye of the user at the displacement position. . Specifically, the crosstalk value occurring in the left eye is 10.4%.

  When the visible region 53b shown in FIG. 12B is further shifted to the right side, the region of the subpixel P7 referred to by the left eye is increased, and the region of the subpixel P1 is decreased. At this time, the controller 7 displays the left eye image on the subpixel P7 and displays the right eye image on the subpixel P1. Thereby, in any case, the crosstalk value for the left eye does not exceed 10.4%.

  In other words, the controller 7 determines subpixels for displaying the left eye image so that the crosstalk does not exceed the maximum value. In the example shown in FIG. 12, when the controller 7 is on the left side of the state shown in FIG. 12B, the controller 7 is on the right side of the state shown in FIG. In this case, the sub-pixels P2 to P7 display the left eye image.

  As described above, in the fifth embodiment, since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the crosstalk value is the same. The same effect as that of the first embodiment is obtained, which is reduced as compared with the crosstalk value of the prior art having an aperture ratio. In the fifth embodiment, the black matrix 52 occupies a large proportion of subpixels that display an image that causes crosstalk that occurs in the eyes of the user, so that crosstalk is reduced. The same effects as those of the embodiment are obtained.

  In the fifth embodiment, the visible region 53 is larger than the width of (m−2) × Hp / b. For this reason, the barrier aperture ratio is larger than the barrier aperture ratio of the first embodiment. Therefore, the amount of image light emitted from the display surface 51 and propagated by the optical element 5 increases. Therefore, the user can recognize more image light.

<Sixth Embodiment (When Barrier Aperture Ratio is 50%, Subpixel Group is 2 Rows and 6 Columns)>
Next, a sixth embodiment of the present disclosure will be described with reference to the drawings. Since the schematic configuration diagram of the fifth embodiment is the same as the schematic configuration diagram of the first embodiment, the description thereof is omitted. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  In the sixth embodiment, an example in which the barrier aperture ratio is 50% will be described as in the fifth embodiment. In the fifth embodiment, the sub-pixel group includes sub-pixels arranged in 2 rows and 3 columns. In the sixth embodiment, the sub-pixel group includes sub-pixels arranged in 2 rows and 6 columns. Is included. That is, n = 6, b = 2, and m = n × b = 6 × 2 = 12. As for the barrier pitch Bp and the barrier opening width Bw, the image pitch k is 2n × Hp = 12 × Hp, and the width of the visible region 53 is (m−2) × Hp / b = (12−2) × Hp / 2 = 5 ×. It is defined to be 6 × Hp, which is larger than Hp. For this reason, in the sixth embodiment, the barrier aperture ratio is (6 × Hp / (12 × Hp)) × 100 = 50%.

  As shown in FIG. 13A, at the reference position, the left eye image is displayed on the subpixels P1 to P12, and the left eye image is displayed on the subpixels P13 to P24. At this time, the visible region 53a of the left eye includes at least a part of each of the subpixels P1 to P12 and a part of the subpixels P24 and P13. Since the left eye image is displayed in the subpixels P1 to P12 and the right eye image is displayed in the subpixels P24 and P13, crosstalk occurs in the left eye of the user. The ratio of the portion of the subpixel P24 included in the visible region 53a of the left eye to the entire subpixel P24 is ¼. Similarly, the ratio of the portion of the subpixel P13 included in the visible region 53b to the entire subpixel P13 is ¼. Further, since there are 12 subpixels included in the visible region 53, the crosstalk value occurring in the left eye is (1/4 + 1/4) /12=4.2%.

  Here, when the position of the left eye is displaced, as shown in FIG. 13B, the visible region 53b of the left eye at the displaced position is different from the visible region 53a of the left eye at the reference position. Specifically, the subpixels P1 and P2 included in the left eye visible region 53b at the displacement position are smaller than the subpixels P1 and P2 included in the left eye visible region 53a at the reference position. Further, the subpixels P12 and P13 included in the left eye visible region 53 at the displacement position are larger than the subpixels P12 and P13 included in the left eye visible region 53a at the reference position. Further, the sub-pixel P14 that is not included in the visible region 53a of the left eye at the reference position is included in the visible region 53b at the displacement position. Since the right eye image is displayed on the subpixels P13 and P14, crosstalk in which the left eye image and the right eye image are mixed occurs in the left eye of the user at the displacement position. Specifically, the crosstalk value occurring in the left eye is 8.3%.

  When the visible region 53b shown in FIG. 13B further shifts to the right side, the controller 7 causes the sub-pixel P13 to display the left-eye image and causes the sub-pixel P1 to refer to the right-eye image. Thereby, in any case, the crosstalk value for the left eye does not exceed 8.3%.

  In other words, the controller 7 determines subpixels for displaying the left eye image so that the crosstalk does not exceed the maximum value. In the example shown in FIG. 11, when the controller 7 is on the left side of the state shown in FIG. 13B, the controller 7 uses the sub-pixels P <b> 1 to P <b> 12 that display the left eye image, and is on the right side of the state shown in FIG. In this case, the sub-pixels P2 to P13 that display the left eye image are used.

  As described above, in the sixth embodiment, since the absolute value of the slope of the straight line formed by the end of the visible region 53 is larger than 1 × Vp / (1 × Hp), the crosstalk value is the same. The same effect as that of the first embodiment is obtained, which is reduced as compared with the crosstalk value of the prior art having an aperture ratio. In the sixth embodiment, the black matrix 52 occupies a larger proportion of subpixels that display an image that causes crosstalk that occurs in the eyes of the user, so that crosstalk is reduced. The same effects as those of the embodiment are obtained.

  In the sixth embodiment, the barrier opening width Bw is larger than the width (m−2) × Hp / b in the visible region 53, so that the barrier opening ratio is the barrier opening of the first embodiment. Greater than rate. Therefore, the amount of image light emitted from the display surface 51 and propagated by the optical element 5 increases. Therefore, the user can recognize more image light.

  In the sixth embodiment, the image pitch k is larger than the image pitch k in the fifth embodiment. Therefore, even if pixels that display an image that causes crosstalk are included in the visible region 53b due to the movement of the position of the user's eyes, the total number of pixels included in the visible region is large. The talk value can be reduced.

  Although the above embodiment has been described as a representative example, it will be apparent to those skilled in the art that many changes and substitutions can be made within the spirit and scope of the invention. Therefore, the present invention should not be construed as being limited by the above-described embodiments, and various modifications and changes can be made without departing from the scope of the claims. For example, a plurality of constituent blocks described in the embodiments and examples can be combined into one, or one constituent block can be divided.

  In each of the above-described embodiments, the optical element 5 is the parallax barrier 6, but is not limited thereto. For example, the optical element 5 provided in the three-dimensional display device 1 may be a lenticular lens 8. In this case, as shown in FIG. 14, the lenticular lens 9 is configured by arranging the cylindrical lenses 10 extending in the vertical direction in a horizontal direction on a plane.

  Similarly to the parallax barrier 6, the lenticular lens 9 propagates the image light emitted from the sub-pixels in the visible region 53 to the position of the user's right eye, and transmits some other sub-pixels in the visible region 53. The emitted image light is propagated to the position of the user's left eye.

DESCRIPTION OF SYMBOLS 1 3D display system 2 Detection apparatus 3 3D display apparatus 4 Irradiator 5 Display panel 6 Parallax barrier 7 Controller 8 Moving body 9 Lenticular lens 10 Cylindrical lens 51 Display surface 52 Black matrix 52a 1st black line 52b 2nd black line 53 Visible region 54 Invisible region 61 Light blocking surface 62 Opening region 100 Head-up display system 110 Optical member 120 Projected member 130 Projected surface 140 Optical path 150 Virtual image

Claims (13)

A display surface comprising a plurality of subpixels arranged in a grid along the horizontal and vertical directions;
An optical element that defines a light beam direction of image light emitted from the sub-pixel for each of a plurality of strip-like regions extending in a predetermined direction on the display surface;
With
The end of the strip region is
Cross over a plurality of said sub-pixels,
A three-dimensional display device in which a length of a section for one pixel along a horizontal direction is shorter than a length of a section for one pixel along a vertical direction.   The optical element propagates the light emitted from some of the sub-pixels in the band-like region to the position of the user's right eye, and the light emitted from the other sub-pixels of the band-like region to the user. The three-dimensional display device according to claim 1, wherein the three-dimensional display device is propagated to the position of the left eye.   The optical element is provided at a predetermined distance from the display surface, includes a light shielding surface arranged in a slit shape, and the plurality of band-shaped regions are visible from one of the right eye and the left eye of the user The three-dimensional display device according to claim 1, wherein the three-dimensional display device is a region on a surface.   The optical element is a lenticular lens provided at a predetermined distance from the display surface, and the plurality of band-like regions are regions on the display surface that are visible from one of the right eye and the left eye of the user. The three-dimensional display device according to claim 1 or 2. A display surface comprising a plurality of subpixels arranged in a grid along the horizontal and vertical directions;
An optical element that defines a light beam direction of image light emitted from the sub-pixel for each of a plurality of strip-shaped regions extending in a predetermined direction on the display surface, and an end portion of the strip-shaped region includes the plurality of sub-pixels. Light that has emitted a part of the sub-pixels in the belt-like region is shorter than the length of the section for one pixel along the vertical direction. An optical element that propagates to the position of the user's right eye and propagates the light emitted from the other sub-pixels of the band-like region to the position of the user's left eye;
A camera that captures the right and left eyes of the user;
A three-dimensional position of the right eye and the left eye of the user is determined based on an image captured by the camera, and is displayed on the display surface based on the three-dimensional position of the right eye and the left eye. A controller for controlling the image;
A three-dimensional display system.   The controller is configured such that the crosstalk value of the image includes an inclination of a straight line that forms an end of the band-shaped region, an opening width that is a horizontal distance of the band-shaped region, and a horizontal arrangement interval of the band-shaped region. The three-dimensional display system according to claim 5, wherein subpixels constituting the image are determined so that crosstalk determined based on the image pitch and the three-dimensional position does not exceed a maximum value. The horizontal length of the sub-pixel is Hp, and the vertical length is Vp.
The slope of the straight line defining the belt-like region is expressed as b × Vp / (a × Hp) using integers a and b (b> a, b ≧ 2) of 2 or more, and is continuous in the horizontal direction. Where n is the number of the sub-pixels arranged, the image pitch is 2 × n × Hp, and the horizontal width of the band-like region is ((n × b) −2) × Hp / b or less. The three-dimensional display system according to claim 6.   The controller has a first position in which the eye of the user is at an appropriate viewing distance from the optical element, and the eye is one of the positions where the crosstalk is a maximum value, where an interocular distance is E. In addition, for each position to be moved E / (n × b) in the displacement direction from the first position, the sub-pixel included in the image is moved with respect to each sub-pixel before the movement of the eye. The three-dimensional display system according to claim 5, wherein the subpixels are adjacent to each other in a direction opposite to the direction. The optical element includes a light shielding surface arranged at a predetermined distance from the display surface and arranged in a slit shape, and the plurality of band-shaped regions are visible on the display surface visible from the right eye and the left eye of the user. Is an area of
The horizontal length of the sub-pixel is Hp, and the vertical length is Vp.
The slope of the straight line that forms the end of the belt-like region is expressed as b × Vp / (a × Hp) using integers a and b of 2 or more, and every n subpixels that are continuous in the horizontal direction. When alternately displaying images to be displayed on the right eye and the left eye,
The barrier aperture ratio of the optical element is substantially
((N × b) -2) / (2n × b)
The three-dimensional display system according to claim 5. The optical element includes a light shielding surface arranged at a predetermined distance from the display surface and arranged in a slit shape, and the plurality of band-shaped regions are visible on the display surface visible from the right eye and the left eye of the user. Is an area of
The horizontal length of the sub-pixel is Hp, and the vertical length is Vp.
The slope of the straight line that forms the end of the belt-like region is expressed as b × Vp / (a × Hp) using integers a and b of 2 or more,
When alternately displaying images to be displayed on the right eye and the left eye for every n subpixels continuous in the horizontal direction,
The three-dimensional display system according to claim 5, wherein n satisfies an expression of n ≧ a + b + 1.   The barrier opening width of the optical element is obtained by multiplying a value obtained by subtracting a value obtained by adding 1 to the maximum number of subpixels that can overlap with the end of the band-shaped region from a value obtained by adding 1 to n, and Hp. The three-dimensional display system according to claim 10, which is a value obtained by dividing b. A display surface comprising a plurality of subpixels arranged in a grid along the horizontal and vertical directions;
An optical element that defines a light beam direction of image light emitted from the sub-pixel for each of a plurality of strip-shaped regions extending in a predetermined direction on the display surface, and an end portion of the strip-shaped region includes the plurality of sub-pixels. Light that has emitted a part of the sub-pixels in the belt-like region is shorter than the length of the section for one pixel along the vertical direction. An optical element that propagates to the position of the user's right eye and propagates the light emitted from the other sub-pixels of the band-like region to the position of the user's left eye;
A camera that captures the right and left eyes of the user;
A three-dimensional position of the right eye and the left eye of the user is determined based on an image captured by the camera, and is displayed on the display surface based on the three-dimensional position of the right eye and the left eye. A controller for controlling the image;
A head-up display system comprising: an optical system that projects the image light emitted from the display surface so as to form a virtual image in a visual field of a user.   A display surface having a plurality of subpixels arranged in a grid pattern along the horizontal direction and the vertical direction, and a plurality of strip-like regions extending in a predetermined direction on the display surface, the image light emitted from the subpixels An optical element for defining a light beam direction, wherein the end of the band-shaped region crosses over the plurality of subpixels, and the length of a section for one pixel along the horizontal direction is one pixel along the vertical direction. The light emitted from some of the sub-pixels in the band-like region is propagated to the position of the right eye of the user and emitted from the other sub-pixels of the band-like region. An optical element that propagates light to the position of the left eye of the user, a camera that captures the right eye and the left eye of the user, and the right eye and the left of the user based on an image captured by the camera The three-dimensional position of the eye is determined, and the right eye And a controller for controlling an image displayed on the display surface based on the three-dimensional position of the left eye and the image light emitted from the display surface so as to form a virtual image in a user's field of view. A moving body comprising a head-up display system including an optical system for projection.

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